We scan the entire internet every week, so detections stay current.
4B+
Observations captured every day, across DNS records, public service scans and websites.
75,317
Technologies tracked, each matched to the companies running them and who to call.
Companies using Nessus
Showing 5 of 7.4K+ companies
Gamuda
gamuda.com.au · Construction · 251–500 employees
Last seen 2 Sep 2026
The most recent date Firmable detected Nessus at this company.
Decision makers · 194 on fileSenior people on file at this company. Firmable holds their names, emails and mobiles.
Engineering DirectorMobileEmail
Head of Transmission InfrastructureMobileEmail
Unlock names, emails and mobiles in the trial.
Signals Recent events at this company, such as a leadership change, funding or a new office.
New Engineering Manager joined · 31 Jul 2026
Gamuda invests into assets: Hazelwood North Solar Farm and Battery Energy Storage System in Victoria, Australia, Australia and New Zealand, Oceania. · 4 Sep 2026
A breakdown of the 7.4K+ companies running Nessus.
Top industries
Information technology and services3K+
Professional and business services989
Financial services809
Industrial and manufacturing564
Construction and building297
Education and training250
Media and telecommunications215
Health and wellness208
No industry recorded: 191
Company size
1–10369 (5%)
11–50838 (12%)
51–2501,781 (25%)
251–500995 (14%)
501–1,000642 (9%)
1,001–5,0001,280 (18%)
5,001–10,000370 (5%)
10,001+751 (11%)
Share of companies with a recorded size, by employees.
No size recorded: 395
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Frequently asked questions
About the Nessus data on this page.
How many companies use Nessus?
Firmable holds confirmed Nessus detections for 7,421 distinct companies, 1,417 of them confirmed in the last 90 days. A company is counted once however many of its properties run it.
Which companies use Nessus?
Gamuda, AVANT Communications and Consensus Cloud Solutions, Inc. are among the most prominent in the current set.
What industries use Nessus?
Information technology and services, professional and business services and financial services lead the set, across 19 industries in total.
What size companies use Nessus?
Adoption concentrates in the 51-250 employee band, across the companies whose size is recorded.
Where are Nessus users based?
The United States, Canada, Australia and Singapore account for most detections, across 13 countries.
How current is this data?
1,417 companies were confirmed in the last 90 days. Last detection 13 October 2026.
